Microarray instruments perform microarrays for genotyping, antibody detection, and comparative genome analysis. Separate components can be purchased to produce, process, scan, and analyse microarrays, and entire systems are available for scanning and analysis. Portable benchtop microarrayers can perform high-density printing on multiple glass substrates simultaneously and with excellent field uniformity. Models featuring special low-fluorescence lenses are ideal for diagnostic applications. Colorimetric systems allow researchers to scan the full spectrum of pigmented labels and import the images into any standard microarray analysis software package.